↓ Transcript
Panel 1:

JOANN: Spider! Caaaaam!!!
CAM: I'll get it. Jeez.

Panel 2:
CAM: Don't be a baby.
JOANN: You're one to talk. You're scared of MOTHS.
CAM: But moths are evil! They EAT yarn!

Panel 3:

MOTH: Once I've devoured all her favorite Kivute yarn, she'll never want to knit again!
MOTH: HAHAHAHAHA!!!

Panel 4:

JOANN: I don't think moths can cackle.
CAM: Yeah, but they're thinking it!